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author | cvs2svn <admin@example.com> | 2025-04-14 17:32:06 +0000 |
---|---|---|
committer | cvs2svn <admin@example.com> | 2025-04-14 17:32:06 +0000 |
commit | eb8dd9dca1228af0cd132f515509051ecfabf6f6 (patch) | |
tree | edb6da6af7e865d488dc1a29309f1e1ec226e603 /src/regress/lib/libssl/dtls | |
parent | 247f0352e0ed72a4f476db9dc91f4d982bc83eb2 (diff) | |
download | openbsd-tb_20250414.tar.gz openbsd-tb_20250414.tar.bz2 openbsd-tb_20250414.zip |
This commit was manufactured by cvs2git to create tag 'tb_20250414'.tb_20250414
Diffstat (limited to '')
-rw-r--r-- | src/regress/lib/libssl/dtls/Makefile | 21 | ||||
-rw-r--r-- | src/regress/lib/libssl/dtls/dtlstest.c | 1077 |
2 files changed, 0 insertions, 1098 deletions
diff --git a/src/regress/lib/libssl/dtls/Makefile b/src/regress/lib/libssl/dtls/Makefile deleted file mode 100644 index b58dae61b6..0000000000 --- a/src/regress/lib/libssl/dtls/Makefile +++ /dev/null | |||
@@ -1,21 +0,0 @@ | |||
1 | # $OpenBSD: Makefile,v 1.4 2024/03/20 10:38:05 jsing Exp $ | ||
2 | |||
3 | PROG= dtlstest | ||
4 | LDADD= ${SSL_INT} -lcrypto | ||
5 | DPADD= ${LIBSSL} ${LIBCRYPTO} | ||
6 | WARNINGS= Yes | ||
7 | CFLAGS+= -DLIBRESSL_INTERNAL -Werror | ||
8 | CFLAGS+= -I${.CURDIR}/../../../../lib/libcrypto/bio | ||
9 | CFLAGS+= -I${.CURDIR}/../../../../lib/libssl | ||
10 | |||
11 | REGRESS_TARGETS= \ | ||
12 | regress-dtlstest | ||
13 | |||
14 | # XXX(jsing): use CA root and chain | ||
15 | regress-dtlstest: ${PROG} | ||
16 | ./dtlstest \ | ||
17 | ${.CURDIR}/../../libssl/certs/server1-rsa.pem \ | ||
18 | ${.CURDIR}/../../libssl/certs/server1-rsa.pem \ | ||
19 | ${.CURDIR}/../../libssl/certs/ca-int-rsa.pem | ||
20 | |||
21 | .include <bsd.regress.mk> | ||
diff --git a/src/regress/lib/libssl/dtls/dtlstest.c b/src/regress/lib/libssl/dtls/dtlstest.c deleted file mode 100644 index a749bcf0ed..0000000000 --- a/src/regress/lib/libssl/dtls/dtlstest.c +++ /dev/null | |||
@@ -1,1077 +0,0 @@ | |||
1 | /* $OpenBSD: dtlstest.c,v 1.18 2022/11/26 16:08:56 tb Exp $ */ | ||
2 | /* | ||
3 | * Copyright (c) 2020, 2021 Joel Sing <jsing@openbsd.org> | ||
4 | * | ||
5 | * Permission to use, copy, modify, and distribute this software for any | ||
6 | * purpose with or without fee is hereby granted, provided that the above | ||
7 | * copyright notice and this permission notice appear in all copies. | ||
8 | * | ||
9 | * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES | ||
10 | * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF | ||
11 | * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR | ||
12 | * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES | ||
13 | * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN | ||
14 | * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF | ||
15 | * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. | ||
16 | */ | ||
17 | |||
18 | #include <netinet/in.h> | ||
19 | #include <sys/socket.h> | ||
20 | |||
21 | #include <err.h> | ||
22 | #include <limits.h> | ||
23 | #include <poll.h> | ||
24 | #include <unistd.h> | ||
25 | |||
26 | #include <openssl/bio.h> | ||
27 | #include <openssl/err.h> | ||
28 | #include <openssl/ssl.h> | ||
29 | |||
30 | #include "bio_local.h" | ||
31 | #include "ssl_local.h" | ||
32 | |||
33 | const char *server_ca_file; | ||
34 | const char *server_cert_file; | ||
35 | const char *server_key_file; | ||
36 | |||
37 | char dtls_cookie[32]; | ||
38 | |||
39 | int debug = 0; | ||
40 | |||
41 | void tls12_record_layer_set_initial_epoch(struct tls12_record_layer *rl, | ||
42 | uint16_t epoch); | ||
43 | |||
44 | static void | ||
45 | hexdump(const unsigned char *buf, size_t len) | ||
46 | { | ||
47 | size_t i; | ||
48 | |||
49 | for (i = 1; i <= len; i++) | ||
50 | fprintf(stderr, " 0x%02hhx,%s", buf[i - 1], i % 8 ? "" : "\n"); | ||
51 | |||
52 | if (len % 8) | ||
53 | fprintf(stderr, "\n"); | ||
54 | } | ||
55 | |||
56 | #define BIO_C_DELAY_COUNT 1000 | ||
57 | #define BIO_C_DELAY_FLUSH 1001 | ||
58 | #define BIO_C_DELAY_PACKET 1002 | ||
59 | #define BIO_C_DROP_PACKET 1003 | ||
60 | #define BIO_C_DROP_RANDOM 1004 | ||
61 | |||
62 | struct bio_packet_monkey_ctx { | ||
63 | unsigned int delay_count; | ||
64 | unsigned int delay_mask; | ||
65 | unsigned int drop_rand; | ||
66 | unsigned int drop_mask; | ||
67 | uint8_t *delayed_msg; | ||
68 | size_t delayed_msg_len; | ||
69 | }; | ||
70 | |||
71 | static int | ||
72 | bio_packet_monkey_new(BIO *bio) | ||
73 | { | ||
74 | struct bio_packet_monkey_ctx *ctx; | ||
75 | |||
76 | if ((ctx = calloc(1, sizeof(*ctx))) == NULL) | ||
77 | return 0; | ||
78 | |||
79 | bio->flags = 0; | ||
80 | bio->init = 1; | ||
81 | bio->num = 0; | ||
82 | bio->ptr = ctx; | ||
83 | |||
84 | return 1; | ||
85 | } | ||
86 | |||
87 | static int | ||
88 | bio_packet_monkey_free(BIO *bio) | ||
89 | { | ||
90 | struct bio_packet_monkey_ctx *ctx; | ||
91 | |||
92 | if (bio == NULL) | ||
93 | return 1; | ||
94 | |||
95 | ctx = bio->ptr; | ||
96 | free(ctx->delayed_msg); | ||
97 | free(ctx); | ||
98 | |||
99 | return 1; | ||
100 | } | ||
101 | |||
102 | static int | ||
103 | bio_packet_monkey_delay_flush(BIO *bio) | ||
104 | { | ||
105 | struct bio_packet_monkey_ctx *ctx = bio->ptr; | ||
106 | |||
107 | if (ctx->delayed_msg == NULL) | ||
108 | return 1; | ||
109 | |||
110 | if (debug) | ||
111 | fprintf(stderr, "DEBUG: flushing delayed packet...\n"); | ||
112 | if (debug > 1) | ||
113 | hexdump(ctx->delayed_msg, ctx->delayed_msg_len); | ||
114 | |||
115 | BIO_write(bio->next_bio, ctx->delayed_msg, ctx->delayed_msg_len); | ||
116 | |||
117 | free(ctx->delayed_msg); | ||
118 | ctx->delayed_msg = NULL; | ||
119 | |||
120 | return BIO_ctrl(bio->next_bio, BIO_CTRL_FLUSH, 0, NULL); | ||
121 | } | ||
122 | |||
123 | static long | ||
124 | bio_packet_monkey_ctrl(BIO *bio, int cmd, long num, void *ptr) | ||
125 | { | ||
126 | struct bio_packet_monkey_ctx *ctx; | ||
127 | |||
128 | ctx = bio->ptr; | ||
129 | |||
130 | switch (cmd) { | ||
131 | case BIO_C_DELAY_COUNT: | ||
132 | if (num < 1 || num > 31) | ||
133 | return 0; | ||
134 | ctx->delay_count = num; | ||
135 | return 1; | ||
136 | |||
137 | case BIO_C_DELAY_FLUSH: | ||
138 | return bio_packet_monkey_delay_flush(bio); | ||
139 | |||
140 | case BIO_C_DELAY_PACKET: | ||
141 | if (num < 1 || num > 31) | ||
142 | return 0; | ||
143 | ctx->delay_mask |= 1 << ((unsigned int)num - 1); | ||
144 | return 1; | ||
145 | |||
146 | case BIO_C_DROP_PACKET: | ||
147 | if (num < 1 || num > 31) | ||
148 | return 0; | ||
149 | ctx->drop_mask |= 1 << ((unsigned int)num - 1); | ||
150 | return 1; | ||
151 | |||
152 | case BIO_C_DROP_RANDOM: | ||
153 | if (num < 0 || (size_t)num > UINT_MAX) | ||
154 | return 0; | ||
155 | ctx->drop_rand = (unsigned int)num; | ||
156 | return 1; | ||
157 | } | ||
158 | |||
159 | if (bio->next_bio == NULL) | ||
160 | return 0; | ||
161 | |||
162 | return BIO_ctrl(bio->next_bio, cmd, num, ptr); | ||
163 | } | ||
164 | |||
165 | static int | ||
166 | bio_packet_monkey_read(BIO *bio, char *out, int out_len) | ||
167 | { | ||
168 | struct bio_packet_monkey_ctx *ctx = bio->ptr; | ||
169 | int ret; | ||
170 | |||
171 | if (ctx == NULL || bio->next_bio == NULL) | ||
172 | return 0; | ||
173 | |||
174 | ret = BIO_read(bio->next_bio, out, out_len); | ||
175 | |||
176 | if (ret > 0) { | ||
177 | if (debug) | ||
178 | fprintf(stderr, "DEBUG: read packet...\n"); | ||
179 | if (debug > 1) | ||
180 | hexdump(out, ret); | ||
181 | } | ||
182 | |||
183 | BIO_clear_retry_flags(bio); | ||
184 | if (ret <= 0 && BIO_should_retry(bio->next_bio)) | ||
185 | BIO_set_retry_read(bio); | ||
186 | |||
187 | return ret; | ||
188 | } | ||
189 | |||
190 | static int | ||
191 | bio_packet_monkey_write(BIO *bio, const char *in, int in_len) | ||
192 | { | ||
193 | struct bio_packet_monkey_ctx *ctx = bio->ptr; | ||
194 | const char *label = "writing"; | ||
195 | int delay = 0, drop = 0; | ||
196 | int ret; | ||
197 | |||
198 | if (ctx == NULL || bio->next_bio == NULL) | ||
199 | return 0; | ||
200 | |||
201 | if (ctx->delayed_msg != NULL && ctx->delay_count > 0) | ||
202 | ctx->delay_count--; | ||
203 | |||
204 | if (ctx->delayed_msg != NULL && ctx->delay_count == 0) { | ||
205 | if (debug) | ||
206 | fprintf(stderr, "DEBUG: writing delayed packet...\n"); | ||
207 | if (debug > 1) | ||
208 | hexdump(ctx->delayed_msg, ctx->delayed_msg_len); | ||
209 | |||
210 | ret = BIO_write(bio->next_bio, ctx->delayed_msg, | ||
211 | ctx->delayed_msg_len); | ||
212 | |||
213 | BIO_clear_retry_flags(bio); | ||
214 | if (ret <= 0 && BIO_should_retry(bio->next_bio)) { | ||
215 | BIO_set_retry_write(bio); | ||
216 | return (ret); | ||
217 | } | ||
218 | |||
219 | free(ctx->delayed_msg); | ||
220 | ctx->delayed_msg = NULL; | ||
221 | } | ||
222 | |||
223 | if (ctx->delay_mask > 0) { | ||
224 | delay = ctx->delay_mask & 1; | ||
225 | ctx->delay_mask >>= 1; | ||
226 | } | ||
227 | if (ctx->drop_rand > 0) { | ||
228 | drop = arc4random_uniform(ctx->drop_rand) == 0; | ||
229 | } else if (ctx->drop_mask > 0) { | ||
230 | drop = ctx->drop_mask & 1; | ||
231 | ctx->drop_mask >>= 1; | ||
232 | } | ||
233 | |||
234 | if (delay) | ||
235 | label = "delaying"; | ||
236 | if (drop) | ||
237 | label = "dropping"; | ||
238 | if (debug) | ||
239 | fprintf(stderr, "DEBUG: %s packet...\n", label); | ||
240 | if (debug > 1) | ||
241 | hexdump(in, in_len); | ||
242 | |||
243 | if (drop) | ||
244 | return in_len; | ||
245 | |||
246 | if (delay) { | ||
247 | if (ctx->delayed_msg != NULL) | ||
248 | return 0; | ||
249 | if ((ctx->delayed_msg = calloc(1, in_len)) == NULL) | ||
250 | return 0; | ||
251 | memcpy(ctx->delayed_msg, in, in_len); | ||
252 | ctx->delayed_msg_len = in_len; | ||
253 | return in_len; | ||
254 | } | ||
255 | |||
256 | ret = BIO_write(bio->next_bio, in, in_len); | ||
257 | |||
258 | BIO_clear_retry_flags(bio); | ||
259 | if (ret <= 0 && BIO_should_retry(bio->next_bio)) | ||
260 | BIO_set_retry_write(bio); | ||
261 | |||
262 | return ret; | ||
263 | } | ||
264 | |||
265 | static int | ||
266 | bio_packet_monkey_puts(BIO *bio, const char *str) | ||
267 | { | ||
268 | return bio_packet_monkey_write(bio, str, strlen(str)); | ||
269 | } | ||
270 | |||
271 | static const BIO_METHOD bio_packet_monkey = { | ||
272 | .type = BIO_TYPE_BUFFER, | ||
273 | .name = "packet monkey", | ||
274 | .bread = bio_packet_monkey_read, | ||
275 | .bwrite = bio_packet_monkey_write, | ||
276 | .bputs = bio_packet_monkey_puts, | ||
277 | .ctrl = bio_packet_monkey_ctrl, | ||
278 | .create = bio_packet_monkey_new, | ||
279 | .destroy = bio_packet_monkey_free | ||
280 | }; | ||
281 | |||
282 | static const BIO_METHOD * | ||
283 | BIO_f_packet_monkey(void) | ||
284 | { | ||
285 | return &bio_packet_monkey; | ||
286 | } | ||
287 | |||
288 | static BIO * | ||
289 | BIO_new_packet_monkey(void) | ||
290 | { | ||
291 | return BIO_new(BIO_f_packet_monkey()); | ||
292 | } | ||
293 | |||
294 | static int | ||
295 | BIO_packet_monkey_delay(BIO *bio, int num, int count) | ||
296 | { | ||
297 | if (!BIO_ctrl(bio, BIO_C_DELAY_COUNT, count, NULL)) | ||
298 | return 0; | ||
299 | |||
300 | return BIO_ctrl(bio, BIO_C_DELAY_PACKET, num, NULL); | ||
301 | } | ||
302 | |||
303 | static int | ||
304 | BIO_packet_monkey_delay_flush(BIO *bio) | ||
305 | { | ||
306 | return BIO_ctrl(bio, BIO_C_DELAY_FLUSH, 0, NULL); | ||
307 | } | ||
308 | |||
309 | static int | ||
310 | BIO_packet_monkey_drop(BIO *bio, int num) | ||
311 | { | ||
312 | return BIO_ctrl(bio, BIO_C_DROP_PACKET, num, NULL); | ||
313 | } | ||
314 | |||
315 | #if 0 | ||
316 | static int | ||
317 | BIO_packet_monkey_drop_random(BIO *bio, int num) | ||
318 | { | ||
319 | return BIO_ctrl(bio, BIO_C_DROP_RANDOM, num, NULL); | ||
320 | } | ||
321 | #endif | ||
322 | |||
323 | static int | ||
324 | datagram_pair(int *client_sock, int *server_sock, | ||
325 | struct sockaddr_in *server_sin) | ||
326 | { | ||
327 | struct sockaddr_in sin; | ||
328 | socklen_t sock_len; | ||
329 | int cs = -1, ss = -1; | ||
330 | |||
331 | memset(&sin, 0, sizeof(sin)); | ||
332 | sin.sin_family = AF_INET; | ||
333 | sin.sin_port = 0; | ||
334 | sin.sin_addr.s_addr = htonl(INADDR_LOOPBACK); | ||
335 | |||
336 | if ((ss = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP)) == -1) | ||
337 | err(1, "server socket"); | ||
338 | if (bind(ss, (struct sockaddr *)&sin, sizeof(sin)) == -1) | ||
339 | err(1, "server bind"); | ||
340 | sock_len = sizeof(sin); | ||
341 | if (getsockname(ss, (struct sockaddr *)&sin, &sock_len) == -1) | ||
342 | err(1, "server getsockname"); | ||
343 | |||
344 | if ((cs = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP)) == -1) | ||
345 | err(1, "client socket"); | ||
346 | if (connect(cs, (struct sockaddr *)&sin, sizeof(sin)) == -1) | ||
347 | err(1, "client connect"); | ||
348 | |||
349 | *client_sock = cs; | ||
350 | *server_sock = ss; | ||
351 | memcpy(server_sin, &sin, sizeof(sin)); | ||
352 | |||
353 | return 1; | ||
354 | } | ||
355 | |||
356 | static int | ||
357 | poll_timeout(SSL *client, SSL *server) | ||
358 | { | ||
359 | int client_timeout = 0, server_timeout = 0; | ||
360 | struct timeval timeout; | ||
361 | |||
362 | if (DTLSv1_get_timeout(client, &timeout)) | ||
363 | client_timeout = timeout.tv_sec * 1000 + timeout.tv_usec / 1000; | ||
364 | |||
365 | if (DTLSv1_get_timeout(server, &timeout)) | ||
366 | server_timeout = timeout.tv_sec * 1000 + timeout.tv_usec / 1000; | ||
367 | |||
368 | if (client_timeout < 10) | ||
369 | client_timeout = 10; | ||
370 | if (server_timeout < 10) | ||
371 | server_timeout = 10; | ||
372 | |||
373 | /* XXX */ | ||
374 | if (client_timeout <= 0) | ||
375 | return server_timeout; | ||
376 | if (client_timeout > 0 && server_timeout <= 0) | ||
377 | return client_timeout; | ||
378 | if (client_timeout < server_timeout) | ||
379 | return client_timeout; | ||
380 | |||
381 | return server_timeout; | ||
382 | } | ||
383 | |||
384 | static int | ||
385 | dtls_cookie_generate(SSL *ssl, unsigned char *cookie, | ||
386 | unsigned int *cookie_len) | ||
387 | { | ||
388 | arc4random_buf(dtls_cookie, sizeof(dtls_cookie)); | ||
389 | memcpy(cookie, dtls_cookie, sizeof(dtls_cookie)); | ||
390 | *cookie_len = sizeof(dtls_cookie); | ||
391 | |||
392 | return 1; | ||
393 | } | ||
394 | |||
395 | static int | ||
396 | dtls_cookie_verify(SSL *ssl, const unsigned char *cookie, | ||
397 | unsigned int cookie_len) | ||
398 | { | ||
399 | return cookie_len == sizeof(dtls_cookie) && | ||
400 | memcmp(cookie, dtls_cookie, sizeof(dtls_cookie)) == 0; | ||
401 | } | ||
402 | |||
403 | static void | ||
404 | dtls_info_callback(const SSL *ssl, int type, int val) | ||
405 | { | ||
406 | /* | ||
407 | * Squeals ahead... remove the bbio from the info callback, so we can | ||
408 | * drop specific messages. Ideally this would be an option for the SSL. | ||
409 | */ | ||
410 | if (ssl->wbio == ssl->bbio) | ||
411 | ((SSL *)ssl)->wbio = BIO_pop(ssl->wbio); | ||
412 | } | ||
413 | |||
414 | static SSL * | ||
415 | dtls_client(int sock, struct sockaddr_in *server_sin, long mtu) | ||
416 | { | ||
417 | SSL_CTX *ssl_ctx = NULL; | ||
418 | SSL *ssl = NULL; | ||
419 | BIO *bio = NULL; | ||
420 | |||
421 | if ((bio = BIO_new_dgram(sock, BIO_NOCLOSE)) == NULL) | ||
422 | errx(1, "client bio"); | ||
423 | if (!BIO_socket_nbio(sock, 1)) | ||
424 | errx(1, "client nbio"); | ||
425 | if (!BIO_ctrl_set_connected(bio, 1, server_sin)) | ||
426 | errx(1, "client set connected"); | ||
427 | |||
428 | if ((ssl_ctx = SSL_CTX_new(DTLS_method())) == NULL) | ||
429 | errx(1, "client context"); | ||
430 | |||
431 | if ((ssl = SSL_new(ssl_ctx)) == NULL) | ||
432 | errx(1, "client ssl"); | ||
433 | |||
434 | SSL_set_bio(ssl, bio, bio); | ||
435 | bio = NULL; | ||
436 | |||
437 | if (mtu > 0) { | ||
438 | SSL_set_options(ssl, SSL_OP_NO_QUERY_MTU); | ||
439 | SSL_set_mtu(ssl, mtu); | ||
440 | } | ||
441 | |||
442 | SSL_CTX_free(ssl_ctx); | ||
443 | BIO_free(bio); | ||
444 | |||
445 | return ssl; | ||
446 | } | ||
447 | |||
448 | static SSL * | ||
449 | dtls_server(int sock, long options, long mtu) | ||
450 | { | ||
451 | SSL_CTX *ssl_ctx = NULL; | ||
452 | SSL *ssl = NULL; | ||
453 | BIO *bio = NULL; | ||
454 | |||
455 | if ((bio = BIO_new_dgram(sock, BIO_NOCLOSE)) == NULL) | ||
456 | errx(1, "server bio"); | ||
457 | if (!BIO_socket_nbio(sock, 1)) | ||
458 | errx(1, "server nbio"); | ||
459 | |||
460 | if ((ssl_ctx = SSL_CTX_new(DTLS_method())) == NULL) | ||
461 | errx(1, "server context"); | ||
462 | |||
463 | SSL_CTX_set_cookie_generate_cb(ssl_ctx, dtls_cookie_generate); | ||
464 | SSL_CTX_set_cookie_verify_cb(ssl_ctx, dtls_cookie_verify); | ||
465 | SSL_CTX_set_dh_auto(ssl_ctx, 2); | ||
466 | SSL_CTX_set_options(ssl_ctx, options); | ||
467 | |||
468 | if (SSL_CTX_use_certificate_chain_file(ssl_ctx, server_cert_file) != 1) { | ||
469 | fprintf(stderr, "FAIL: Failed to load server certificate"); | ||
470 | goto failure; | ||
471 | } | ||
472 | if (SSL_CTX_use_PrivateKey_file(ssl_ctx, server_key_file, | ||
473 | SSL_FILETYPE_PEM) != 1) { | ||
474 | fprintf(stderr, "FAIL: Failed to load server private key"); | ||
475 | goto failure; | ||
476 | } | ||
477 | |||
478 | if ((ssl = SSL_new(ssl_ctx)) == NULL) | ||
479 | errx(1, "server ssl"); | ||
480 | |||
481 | if (SSL_use_certificate_chain_file(ssl, server_cert_file) != 1) { | ||
482 | fprintf(stderr, "FAIL: Failed to load server certificate"); | ||
483 | goto failure; | ||
484 | } | ||
485 | SSL_set_bio(ssl, bio, bio); | ||
486 | bio = NULL; | ||
487 | |||
488 | if (mtu > 0) { | ||
489 | SSL_set_options(ssl, SSL_OP_NO_QUERY_MTU); | ||
490 | SSL_set_mtu(ssl, mtu); | ||
491 | } | ||
492 | |||
493 | failure: | ||
494 | SSL_CTX_free(ssl_ctx); | ||
495 | BIO_free(bio); | ||
496 | |||
497 | return ssl; | ||
498 | } | ||
499 | |||
500 | static int | ||
501 | ssl_error(SSL *ssl, const char *name, const char *desc, int ssl_ret, | ||
502 | short *events) | ||
503 | { | ||
504 | int ssl_err; | ||
505 | |||
506 | ssl_err = SSL_get_error(ssl, ssl_ret); | ||
507 | |||
508 | if (ssl_err == SSL_ERROR_WANT_READ) { | ||
509 | *events = POLLIN; | ||
510 | } else if (ssl_err == SSL_ERROR_WANT_WRITE) { | ||
511 | *events = POLLOUT; | ||
512 | } else if (ssl_err == SSL_ERROR_SYSCALL && errno == 0) { | ||
513 | /* Yup, this is apparently a thing... */ | ||
514 | } else { | ||
515 | fprintf(stderr, "FAIL: %s %s failed - ssl err = %d, errno = %d\n", | ||
516 | name, desc, ssl_err, errno); | ||
517 | ERR_print_errors_fp(stderr); | ||
518 | return 0; | ||
519 | } | ||
520 | |||
521 | return 1; | ||
522 | } | ||
523 | |||
524 | static int | ||
525 | do_connect(SSL *ssl, const char *name, int *done, short *events) | ||
526 | { | ||
527 | int ssl_ret; | ||
528 | |||
529 | if ((ssl_ret = SSL_connect(ssl)) != 1) | ||
530 | return ssl_error(ssl, name, "connect", ssl_ret, events); | ||
531 | |||
532 | fprintf(stderr, "INFO: %s connect done\n", name); | ||
533 | *done = 1; | ||
534 | |||
535 | return 1; | ||
536 | } | ||
537 | |||
538 | static int | ||
539 | do_connect_read(SSL *ssl, const char *name, int *done, short *events) | ||
540 | { | ||
541 | uint8_t buf[2048]; | ||
542 | int ssl_ret; | ||
543 | int i; | ||
544 | |||
545 | if ((ssl_ret = SSL_connect(ssl)) != 1) | ||
546 | return ssl_error(ssl, name, "connect", ssl_ret, events); | ||
547 | |||
548 | fprintf(stderr, "INFO: %s connect done\n", name); | ||
549 | *done = 1; | ||
550 | |||
551 | for (i = 0; i < 3; i++) { | ||
552 | fprintf(stderr, "INFO: %s reading after connect\n", name); | ||
553 | if ((ssl_ret = SSL_read(ssl, buf, sizeof(buf))) != 3) { | ||
554 | fprintf(stderr, "ERROR: %s read failed\n", name); | ||
555 | return 0; | ||
556 | } | ||
557 | } | ||
558 | |||
559 | return 1; | ||
560 | } | ||
561 | |||
562 | static int | ||
563 | do_connect_shutdown(SSL *ssl, const char *name, int *done, short *events) | ||
564 | { | ||
565 | uint8_t buf[2048]; | ||
566 | int ssl_ret; | ||
567 | |||
568 | if ((ssl_ret = SSL_connect(ssl)) != 1) | ||
569 | return ssl_error(ssl, name, "connect", ssl_ret, events); | ||
570 | |||
571 | fprintf(stderr, "INFO: %s connect done\n", name); | ||
572 | *done = 1; | ||
573 | |||
574 | ssl_ret = SSL_read(ssl, buf, sizeof(buf)); | ||
575 | if (SSL_get_error(ssl, ssl_ret) != SSL_ERROR_ZERO_RETURN) { | ||
576 | fprintf(stderr, "FAIL: %s did not receive close-notify\n", name); | ||
577 | return 0; | ||
578 | } | ||
579 | |||
580 | fprintf(stderr, "INFO: %s received close-notify\n", name); | ||
581 | |||
582 | return 1; | ||
583 | } | ||
584 | |||
585 | static int | ||
586 | do_accept(SSL *ssl, const char *name, int *done, short *events) | ||
587 | { | ||
588 | int ssl_ret; | ||
589 | |||
590 | if ((ssl_ret = SSL_accept(ssl)) != 1) | ||
591 | return ssl_error(ssl, name, "accept", ssl_ret, events); | ||
592 | |||
593 | fprintf(stderr, "INFO: %s accept done\n", name); | ||
594 | *done = 1; | ||
595 | |||
596 | return 1; | ||
597 | } | ||
598 | |||
599 | static int | ||
600 | do_accept_write(SSL *ssl, const char *name, int *done, short *events) | ||
601 | { | ||
602 | int ssl_ret; | ||
603 | BIO *bio; | ||
604 | int i; | ||
605 | |||
606 | if ((ssl_ret = SSL_accept(ssl)) != 1) | ||
607 | return ssl_error(ssl, name, "accept", ssl_ret, events); | ||
608 | |||
609 | fprintf(stderr, "INFO: %s accept done\n", name); | ||
610 | |||
611 | for (i = 0; i < 3; i++) { | ||
612 | fprintf(stderr, "INFO: %s writing after accept\n", name); | ||
613 | if ((ssl_ret = SSL_write(ssl, "abc", 3)) != 3) { | ||
614 | fprintf(stderr, "ERROR: %s write failed\n", name); | ||
615 | return 0; | ||
616 | } | ||
617 | } | ||
618 | |||
619 | if ((bio = SSL_get_wbio(ssl)) == NULL) | ||
620 | errx(1, "SSL has NULL bio"); | ||
621 | |||
622 | /* Flush any delayed packets. */ | ||
623 | BIO_packet_monkey_delay_flush(bio); | ||
624 | |||
625 | *done = 1; | ||
626 | return 1; | ||
627 | } | ||
628 | |||
629 | static int | ||
630 | do_accept_shutdown(SSL *ssl, const char *name, int *done, short *events) | ||
631 | { | ||
632 | int ssl_ret; | ||
633 | BIO *bio; | ||
634 | |||
635 | if ((ssl_ret = SSL_accept(ssl)) != 1) | ||
636 | return ssl_error(ssl, name, "accept", ssl_ret, events); | ||
637 | |||
638 | fprintf(stderr, "INFO: %s accept done\n", name); | ||
639 | |||
640 | SSL_shutdown(ssl); | ||
641 | |||
642 | if ((bio = SSL_get_wbio(ssl)) == NULL) | ||
643 | errx(1, "SSL has NULL bio"); | ||
644 | |||
645 | /* Flush any delayed packets. */ | ||
646 | BIO_packet_monkey_delay_flush(bio); | ||
647 | |||
648 | *done = 1; | ||
649 | return 1; | ||
650 | } | ||
651 | |||
652 | static int | ||
653 | do_read(SSL *ssl, const char *name, int *done, short *events) | ||
654 | { | ||
655 | uint8_t buf[512]; | ||
656 | int ssl_ret; | ||
657 | |||
658 | if ((ssl_ret = SSL_read(ssl, buf, sizeof(buf))) > 0) { | ||
659 | fprintf(stderr, "INFO: %s read done\n", name); | ||
660 | if (debug > 1) | ||
661 | hexdump(buf, ssl_ret); | ||
662 | *done = 1; | ||
663 | return 1; | ||
664 | } | ||
665 | |||
666 | return ssl_error(ssl, name, "read", ssl_ret, events); | ||
667 | } | ||
668 | |||
669 | static int | ||
670 | do_write(SSL *ssl, const char *name, int *done, short *events) | ||
671 | { | ||
672 | const uint8_t buf[] = "Hello, World!\n"; | ||
673 | int ssl_ret; | ||
674 | |||
675 | if ((ssl_ret = SSL_write(ssl, buf, sizeof(buf))) > 0) { | ||
676 | fprintf(stderr, "INFO: %s write done\n", name); | ||
677 | *done = 1; | ||
678 | return 1; | ||
679 | } | ||
680 | |||
681 | return ssl_error(ssl, name, "write", ssl_ret, events); | ||
682 | } | ||
683 | |||
684 | static int | ||
685 | do_shutdown(SSL *ssl, const char *name, int *done, short *events) | ||
686 | { | ||
687 | int ssl_ret; | ||
688 | |||
689 | ssl_ret = SSL_shutdown(ssl); | ||
690 | if (ssl_ret == 1) { | ||
691 | fprintf(stderr, "INFO: %s shutdown done\n", name); | ||
692 | *done = 1; | ||
693 | return 1; | ||
694 | } | ||
695 | return ssl_error(ssl, name, "shutdown", ssl_ret, events); | ||
696 | } | ||
697 | |||
698 | typedef int (ssl_func)(SSL *ssl, const char *name, int *done, short *events); | ||
699 | |||
700 | static int | ||
701 | do_client_server_loop(SSL *client, ssl_func *client_func, SSL *server, | ||
702 | ssl_func *server_func, struct pollfd pfd[2]) | ||
703 | { | ||
704 | int client_done = 0, server_done = 0; | ||
705 | int i = 0; | ||
706 | |||
707 | pfd[0].revents = POLLIN; | ||
708 | pfd[1].revents = POLLIN; | ||
709 | |||
710 | do { | ||
711 | if (!client_done) { | ||
712 | if (debug) | ||
713 | fprintf(stderr, "DEBUG: client loop\n"); | ||
714 | if (DTLSv1_handle_timeout(client) > 0) | ||
715 | fprintf(stderr, "INFO: client timeout\n"); | ||
716 | if (!client_func(client, "client", &client_done, | ||
717 | &pfd[0].events)) | ||
718 | return 0; | ||
719 | if (client_done) | ||
720 | pfd[0].events = 0; | ||
721 | } | ||
722 | if (!server_done) { | ||
723 | if (debug) | ||
724 | fprintf(stderr, "DEBUG: server loop\n"); | ||
725 | if (DTLSv1_handle_timeout(server) > 0) | ||
726 | fprintf(stderr, "INFO: server timeout\n"); | ||
727 | if (!server_func(server, "server", &server_done, | ||
728 | &pfd[1].events)) | ||
729 | return 0; | ||
730 | if (server_done) | ||
731 | pfd[1].events = 0; | ||
732 | } | ||
733 | if (poll(pfd, 2, poll_timeout(client, server)) == -1) | ||
734 | err(1, "poll"); | ||
735 | |||
736 | } while (i++ < 100 && (!client_done || !server_done)); | ||
737 | |||
738 | if (!client_done || !server_done) | ||
739 | fprintf(stderr, "FAIL: gave up\n"); | ||
740 | |||
741 | return client_done && server_done; | ||
742 | } | ||
743 | |||
744 | #define MAX_PACKET_DELAYS 32 | ||
745 | #define MAX_PACKET_DROPS 32 | ||
746 | |||
747 | struct dtls_delay { | ||
748 | uint8_t packet; | ||
749 | uint8_t count; | ||
750 | }; | ||
751 | |||
752 | struct dtls_test { | ||
753 | const unsigned char *desc; | ||
754 | long mtu; | ||
755 | long ssl_options; | ||
756 | int client_bbio_off; | ||
757 | int server_bbio_off; | ||
758 | uint16_t initial_epoch; | ||
759 | int write_after_accept; | ||
760 | int shutdown_after_accept; | ||
761 | struct dtls_delay client_delays[MAX_PACKET_DELAYS]; | ||
762 | struct dtls_delay server_delays[MAX_PACKET_DELAYS]; | ||
763 | uint8_t client_drops[MAX_PACKET_DROPS]; | ||
764 | uint8_t server_drops[MAX_PACKET_DROPS]; | ||
765 | }; | ||
766 | |||
767 | static const struct dtls_test dtls_tests[] = { | ||
768 | { | ||
769 | .desc = "DTLS without cookies", | ||
770 | .ssl_options = 0, | ||
771 | }, | ||
772 | { | ||
773 | .desc = "DTLS without cookies (initial epoch 0xfffe)", | ||
774 | .ssl_options = 0, | ||
775 | .initial_epoch = 0xfffe, | ||
776 | }, | ||
777 | { | ||
778 | .desc = "DTLS without cookies (initial epoch 0xffff)", | ||
779 | .ssl_options = 0, | ||
780 | .initial_epoch = 0xffff, | ||
781 | }, | ||
782 | { | ||
783 | .desc = "DTLS with cookies", | ||
784 | .ssl_options = SSL_OP_COOKIE_EXCHANGE, | ||
785 | }, | ||
786 | { | ||
787 | .desc = "DTLS with low MTU", | ||
788 | .mtu = 256, | ||
789 | .ssl_options = 0, | ||
790 | }, | ||
791 | { | ||
792 | .desc = "DTLS with low MTU and cookies", | ||
793 | .mtu = 256, | ||
794 | .ssl_options = SSL_OP_COOKIE_EXCHANGE, | ||
795 | }, | ||
796 | { | ||
797 | .desc = "DTLS with dropped server response", | ||
798 | .ssl_options = 0, | ||
799 | .server_drops = { 1 }, | ||
800 | }, | ||
801 | { | ||
802 | .desc = "DTLS with two dropped server responses", | ||
803 | .ssl_options = 0, | ||
804 | .server_drops = { 1, 2 }, | ||
805 | }, | ||
806 | { | ||
807 | .desc = "DTLS with dropped ServerHello", | ||
808 | .ssl_options = SSL_OP_NO_TICKET, | ||
809 | .server_bbio_off = 1, | ||
810 | .server_drops = { 1 }, | ||
811 | }, | ||
812 | { | ||
813 | .desc = "DTLS with dropped server Certificate", | ||
814 | .ssl_options = SSL_OP_NO_TICKET, | ||
815 | .server_bbio_off = 1, | ||
816 | .server_drops = { 2 }, | ||
817 | }, | ||
818 | { | ||
819 | .desc = "DTLS with dropped ServerKeyExchange", | ||
820 | .ssl_options = SSL_OP_NO_TICKET, | ||
821 | .server_bbio_off = 1, | ||
822 | .server_drops = { 3 }, | ||
823 | }, | ||
824 | { | ||
825 | .desc = "DTLS with dropped ServerHelloDone", | ||
826 | .ssl_options = SSL_OP_NO_TICKET, | ||
827 | .server_bbio_off = 1, | ||
828 | .server_drops = { 4 }, | ||
829 | }, | ||
830 | #if 0 | ||
831 | /* | ||
832 | * These two result in the server accept completing and the | ||
833 | * client looping on a timeout. Presumably the server should not | ||
834 | * complete until the client Finished is received... this due to | ||
835 | * a flaw in the DTLSv1.0 specification, which is addressed in | ||
836 | * DTLSv1.2 (see references to "last flight" in RFC 6347 section | ||
837 | * 4.2.4). Our DTLS server code still needs to support this. | ||
838 | */ | ||
839 | { | ||
840 | .desc = "DTLS with dropped server CCS", | ||
841 | .ssl_options = 0, | ||
842 | .server_bbio_off = 1, | ||
843 | .server_drops = { 5 }, | ||
844 | }, | ||
845 | { | ||
846 | .desc = "DTLS with dropped server Finished", | ||
847 | .ssl_options = 0, | ||
848 | .server_bbio_off = 1, | ||
849 | .server_drops = { 6 }, | ||
850 | }, | ||
851 | #endif | ||
852 | { | ||
853 | .desc = "DTLS with dropped ClientKeyExchange", | ||
854 | .ssl_options = 0, | ||
855 | .client_bbio_off = 1, | ||
856 | .client_drops = { 2 }, | ||
857 | }, | ||
858 | { | ||
859 | .desc = "DTLS with dropped client CCS", | ||
860 | .ssl_options = 0, | ||
861 | .client_bbio_off = 1, | ||
862 | .client_drops = { 3 }, | ||
863 | }, | ||
864 | { | ||
865 | .desc = "DTLS with dropped client Finished", | ||
866 | .ssl_options = 0, | ||
867 | .client_bbio_off = 1, | ||
868 | .client_drops = { 4 }, | ||
869 | }, | ||
870 | { | ||
871 | /* Send CCS after client Finished. */ | ||
872 | .desc = "DTLS with delayed client CCS", | ||
873 | .ssl_options = 0, | ||
874 | .client_bbio_off = 1, | ||
875 | .client_delays = { { 3, 2 } }, | ||
876 | }, | ||
877 | { | ||
878 | /* | ||
879 | * Send CCS after server Finished - note app data will be | ||
880 | * dropped if we send the CCS after app data. | ||
881 | */ | ||
882 | .desc = "DTLS with delayed server CCS", | ||
883 | .ssl_options = SSL_OP_NO_TICKET, | ||
884 | .server_bbio_off = 1, | ||
885 | .server_delays = { { 5, 2 } }, | ||
886 | .write_after_accept = 1, | ||
887 | }, | ||
888 | { | ||
889 | .desc = "DTLS with delayed server CCS (initial epoch 0xfffe)", | ||
890 | .ssl_options = SSL_OP_NO_TICKET, | ||
891 | .server_bbio_off = 1, | ||
892 | .initial_epoch = 0xfffe, | ||
893 | .server_delays = { { 5, 2 } }, | ||
894 | .write_after_accept = 1, | ||
895 | }, | ||
896 | { | ||
897 | .desc = "DTLS with delayed server CCS (initial epoch 0xffff)", | ||
898 | .ssl_options = SSL_OP_NO_TICKET, | ||
899 | .server_bbio_off = 1, | ||
900 | .initial_epoch = 0xffff, | ||
901 | .server_delays = { { 5, 2 } }, | ||
902 | .write_after_accept = 1, | ||
903 | }, | ||
904 | { | ||
905 | /* Send Finished after app data - this is currently buffered. */ | ||
906 | .desc = "DTLS with delayed server Finished", | ||
907 | .ssl_options = SSL_OP_NO_TICKET, | ||
908 | .server_bbio_off = 1, | ||
909 | .server_delays = { { 6, 3 } }, | ||
910 | .write_after_accept = 1, | ||
911 | }, | ||
912 | { | ||
913 | /* Send CCS after server finished and close-notify. */ | ||
914 | .desc = "DTLS with delayed server CCS (close-notify)", | ||
915 | .ssl_options = SSL_OP_NO_TICKET, | ||
916 | .server_bbio_off = 1, | ||
917 | .server_delays = { { 5, 3 } }, | ||
918 | .shutdown_after_accept = 1, | ||
919 | }, | ||
920 | }; | ||
921 | |||
922 | #define N_DTLS_TESTS (sizeof(dtls_tests) / sizeof(*dtls_tests)) | ||
923 | |||
924 | static void | ||
925 | dtlstest_packet_monkey(SSL *ssl, const struct dtls_delay delays[], | ||
926 | const uint8_t drops[]) | ||
927 | { | ||
928 | BIO *bio_monkey; | ||
929 | BIO *bio; | ||
930 | int i; | ||
931 | |||
932 | if ((bio_monkey = BIO_new_packet_monkey()) == NULL) | ||
933 | errx(1, "packet monkey"); | ||
934 | |||
935 | for (i = 0; i < MAX_PACKET_DELAYS; i++) { | ||
936 | if (delays[i].packet == 0) | ||
937 | break; | ||
938 | if (!BIO_packet_monkey_delay(bio_monkey, delays[i].packet, | ||
939 | delays[i].count)) | ||
940 | errx(1, "delay failure"); | ||
941 | } | ||
942 | |||
943 | for (i = 0; i < MAX_PACKET_DROPS; i++) { | ||
944 | if (drops[i] == 0) | ||
945 | break; | ||
946 | if (!BIO_packet_monkey_drop(bio_monkey, drops[i])) | ||
947 | errx(1, "drop failure"); | ||
948 | } | ||
949 | |||
950 | if ((bio = SSL_get_wbio(ssl)) == NULL) | ||
951 | errx(1, "SSL has NULL bio"); | ||
952 | |||
953 | BIO_up_ref(bio); | ||
954 | bio = BIO_push(bio_monkey, bio); | ||
955 | |||
956 | SSL_set_bio(ssl, bio, bio); | ||
957 | } | ||
958 | |||
959 | static int | ||
960 | dtlstest(const struct dtls_test *dt) | ||
961 | { | ||
962 | SSL *client = NULL, *server = NULL; | ||
963 | ssl_func *connect_func, *accept_func; | ||
964 | struct sockaddr_in server_sin; | ||
965 | struct pollfd pfd[2]; | ||
966 | int client_sock = -1; | ||
967 | int server_sock = -1; | ||
968 | int failed = 1; | ||
969 | |||
970 | fprintf(stderr, "\n== Testing %s... ==\n", dt->desc); | ||
971 | |||
972 | if (!datagram_pair(&client_sock, &server_sock, &server_sin)) | ||
973 | goto failure; | ||
974 | |||
975 | if ((client = dtls_client(client_sock, &server_sin, dt->mtu)) == NULL) | ||
976 | goto failure; | ||
977 | |||
978 | if ((server = dtls_server(server_sock, dt->ssl_options, dt->mtu)) == NULL) | ||
979 | goto failure; | ||
980 | |||
981 | tls12_record_layer_set_initial_epoch(client->rl, dt->initial_epoch); | ||
982 | tls12_record_layer_set_initial_epoch(server->rl, dt->initial_epoch); | ||
983 | |||
984 | if (dt->client_bbio_off) | ||
985 | SSL_set_info_callback(client, dtls_info_callback); | ||
986 | if (dt->server_bbio_off) | ||
987 | SSL_set_info_callback(server, dtls_info_callback); | ||
988 | |||
989 | dtlstest_packet_monkey(client, dt->client_delays, dt->client_drops); | ||
990 | dtlstest_packet_monkey(server, dt->server_delays, dt->server_drops); | ||
991 | |||
992 | pfd[0].fd = client_sock; | ||
993 | pfd[0].events = POLLOUT; | ||
994 | pfd[1].fd = server_sock; | ||
995 | pfd[1].events = POLLIN; | ||
996 | |||
997 | accept_func = do_accept; | ||
998 | connect_func = do_connect; | ||
999 | |||
1000 | if (dt->write_after_accept) { | ||
1001 | accept_func = do_accept_write; | ||
1002 | connect_func = do_connect_read; | ||
1003 | } else if (dt->shutdown_after_accept) { | ||
1004 | accept_func = do_accept_shutdown; | ||
1005 | connect_func = do_connect_shutdown; | ||
1006 | } | ||
1007 | |||
1008 | if (!do_client_server_loop(client, connect_func, server, accept_func, pfd)) { | ||
1009 | fprintf(stderr, "FAIL: client and server handshake failed\n"); | ||
1010 | goto failure; | ||
1011 | } | ||
1012 | |||
1013 | if (dt->write_after_accept || dt->shutdown_after_accept) | ||
1014 | goto done; | ||
1015 | |||
1016 | pfd[0].events = POLLIN; | ||
1017 | pfd[1].events = POLLOUT; | ||
1018 | |||
1019 | if (!do_client_server_loop(client, do_read, server, do_write, pfd)) { | ||
1020 | fprintf(stderr, "FAIL: client read and server write I/O failed\n"); | ||
1021 | goto failure; | ||
1022 | } | ||
1023 | |||
1024 | pfd[0].events = POLLOUT; | ||
1025 | pfd[1].events = POLLIN; | ||
1026 | |||
1027 | if (!do_client_server_loop(client, do_write, server, do_read, pfd)) { | ||
1028 | fprintf(stderr, "FAIL: client write and server read I/O failed\n"); | ||
1029 | goto failure; | ||
1030 | } | ||
1031 | |||
1032 | pfd[0].events = POLLOUT; | ||
1033 | pfd[1].events = POLLOUT; | ||
1034 | |||
1035 | if (!do_client_server_loop(client, do_shutdown, server, do_shutdown, pfd)) { | ||
1036 | fprintf(stderr, "FAIL: client and server shutdown failed\n"); | ||
1037 | goto failure; | ||
1038 | } | ||
1039 | |||
1040 | done: | ||
1041 | fprintf(stderr, "INFO: Done!\n"); | ||
1042 | |||
1043 | failed = 0; | ||
1044 | |||
1045 | failure: | ||
1046 | if (client_sock != -1) | ||
1047 | close(client_sock); | ||
1048 | if (server_sock != -1) | ||
1049 | close(server_sock); | ||
1050 | |||
1051 | SSL_free(client); | ||
1052 | SSL_free(server); | ||
1053 | |||
1054 | return failed; | ||
1055 | } | ||
1056 | |||
1057 | int | ||
1058 | main(int argc, char **argv) | ||
1059 | { | ||
1060 | int failed = 0; | ||
1061 | size_t i; | ||
1062 | |||
1063 | if (argc != 4) { | ||
1064 | fprintf(stderr, "usage: %s keyfile certfile cafile\n", | ||
1065 | argv[0]); | ||
1066 | exit(1); | ||
1067 | } | ||
1068 | |||
1069 | server_key_file = argv[1]; | ||
1070 | server_cert_file = argv[2]; | ||
1071 | server_ca_file = argv[3]; | ||
1072 | |||
1073 | for (i = 0; i < N_DTLS_TESTS; i++) | ||
1074 | failed |= dtlstest(&dtls_tests[i]); | ||
1075 | |||
1076 | return failed; | ||
1077 | } | ||